Paper tube making machinery



Nov. 28, 1939.

DA C. SPAULDING. JR

PAPER TUBE MAKING MACHINERY Filed Aug. 20, 1957 3 Sheets-Sheet l o o VEN w E QN f fl w" EN 4- A `uw n l f @E WN su .2 9N N n l J INVENTOR.

BY @5f/Zan 1 ATTO EY5.

NOV- 28, 1939- D c, SPAULDING. JR

PAPER TUBE MAKING MACHINERY Filed Aug. 20, 1957 5 Sheets-Sheet 2INVENTOR. Ua VMI C. pau/Zz'lzyJr A TTORNEY Nov. 28, 1939. ID. c.sPAuLDlNG. JR

' PAPER TUBE MAKING MACHINERY INVENTOR.

ATTORNEY5',

. gripper is in open position-when opposite the y Patented Nov. 28, 1939PAPER TUBE MAKING MACHINERY David C. Spaulding, Jr., Cleveland, Ohio,assignor to The Standard Oil Company,-Cleveland, Ohio, a corporation ofOhio Application August 20, 1937, Serial No. 160,029

20 Claims.

This invention relates to paper tube making machinery, and moreparticularly mechanism in 'which the tube structures are formed andintermittently discharged; and it is among the objects of the inventionto provide a construction making possible a rapid through-put ofconvolute wound tubes, with or without special finishing operations asmay be desired. Other objects and advantages will appear as thedescription proceeds.

To the accomplishment of the foregoing and related ends, the invention,then, comprises the features hereinafter fully described, andparticularly pointed out in the claims, the following description andthe annexed drawings setting forth in detail certain illustrativeembodiments of the invention, these being indicative however, of but afew of the various ways in which the principle of the invention may beemployed.

In said annexed drawings:

Fig. 1 is a side elevational view, partly in section, showing anembodiment of the invention; Fig. la is an enlarged detail elevation,partly in section, of the mandrel; Fig. 1b is a further enlarged sectionthereof taken on axplane substantially indicated by line Ib of Fig. 1a;Fig. 1c is an enlarged elevation detail of Fig. 1; Fig. 2 is an enlargedvertical section taken on a plane substantially indicated by line II,Fig. 1, and Fig. 2a is a fragmentary detail thereof showing the tableddriving-connections, Fig. 3 is a similar view, on larger scale, taken ona plane substantilly indicated by line III, Fig. 1; and Figs. 4, 5 and 6are fragmentary details of the latter.

Referring more particularly to the drawings,

V there is shown a mandrel 2 which has its drive at the left in Fig. 1,and while the driving means may vary in detail as desired it maycomprise in general a shaft 3 supported in framing 4 and having gearingG'suitably intermittently rotating the mandrel, while the web ofcellulose stock or paper w, Fig. 2, is supplied from a stock roll notshown and passed through an adhesive applicator to the winding stationon the mandrel. The stock or paper may be any suitable material for suchpurpose, and most usually kraft, chestnut board, chip-board, etc. forcommoner products, or higher grade paper for spcial products as desired.The web w proceeding through the applicator receives on one side acoating of adhesive picked up and distributed from the pan 8 by theroller 9, and then proceeds over the feed table F to the mandrel. Thelatter is provided with a gripper I2, and timing thereof being such thatthe end of the advancing paper web, Suitable gripper-operating means maythen close the gripper on the fed end, and on the rotation of themandrel the desired layers are laid up to form a tube, whereupon thecutter I5 which is operated in timed relation by a cam on the machinedrive shaft, severs the paper from the web. The gripper-operating meansmay comprise for instance a pinion I9, Fig. 1b, on alongitudinally-extending shaft I9a. within the mandrel and driving shaft3 and conveniently being hollow. Depending'v mandrel, whether operatingupon large or small tubes, there may be idler pinion connection I8, I8'between the driving pinion I9 and the toothed segment of the gripper I2,the idlers in .general being unnecessary for small sized tubes. Withsuch construction, the slight turning movement of the gripper I2 foropening and closing against the coacting lip of the mandrel may beimparted by correspondingly slight turning movement of the drive pinionI9. This may for instance involve a camming action in relative rotationfor the pinion shaft I9a with respect to the mandrel shaft 3, and uponthe latter there may be slidably mounted a sleeve I9b so as to berotatable with the shaft 3 and being anti-frictionally engaged byoperating fork I9e which is reciprocated by engagement by a cam I9c onthe shaft 48. Extending outwardly from the pinion shaft I9a is a pin I9dwhich rides in a transverse slot I 9j in shaft 3 and in an angular slotI9g in sleeve I9b, Fig. 1c, such that longitudinal reciprocation of thesleeve ISb causes the pin I9d to relatively slightly turn andcorrespondingly rotate the pinion I9 in the mandrel in timed relation.The feed-end of the paper web w being glued on its upper surface,proceeds over the guide roller g on the rear end of the feed table funder the detent-iinger d which prevents backslip of the web, thedetent-nger being pivotally mounted at its upper end and being slightlylonger than the vertical distance to the oor of the table, whereby toallow the paper web to proceed freely in the forward direction, butoccasioning a wedging or grabbing by frictional engagement preventive ofbackward slippage. Forwardly of the detent-finger, the paper webproceeds through a slitter cutter r, if it be desired to sever the stockhere for two tubes instead of one as wound by the mandrel. The slitterknife of course may be omitted when operating to formk one longer tubeupon the size of the at a time rather than two end to end. Forwardly ofthe slitter is a feed nger mechanism which mayincludea'frictionally-engaging nger Illa tion against the lower xed finger I0by a hookshaped arm I 0b pivoted at the rear and having an angular arm I0c from the end of which a 'tension spring extends to a point ofanchorage on the side of the table. The arm |0c being oi center withrespect to the tension spring occasions the impartation of a downwardpressure through the hook-shaped arm IIJb when the latter is turned downagainst the finger Illa, but allowing such hook-shaped arm to be swungback upwardly, when desired, the tension spring then being past centerin the other direction and serving to hold the hook out of engagementdown on the finger Ina, thereby allowing easy threading of the paperpast the nger. It will be understood that the entire table F with thestructures which have just been described, is mounted for reciprocativemovement back and forth toward and away from the mandrel, the table forinstance being conveniently carried on rollers I2 riding on the supportframing, and having a limited range of back and forth movement by reasonof gudgeons extending into slots I3 in slide extensions below thegeneral level of the table. Reciprocating movement of the table may beprovided by a swing-arm I Ia connected through an equalizing link to aprojection II of the table. The swingarm Ila is secured to a rock shaftIIb, which also has 4a xedly-attached lever arm I Ic, Fig. 2a, while alever arm Ile whose one end is pivoted to the framing Ilh carries acamroller Ilf in engagement with a cam IIg on the shaft 48. The cam-arm Ileis connected with the rock shaft arm IIc by a link I I d. Thereby, withthe turning of the cam raise II g the cam arm IIe is raised, and thebell-crank system I Ic-I I a is actuated to thrust the arm Ila and thetable rearwardly.

On the further turning ofthe cam I Iw, the return spring H7' draws thetable again forwardly. With the paper initially threaded through toposition to be fed to and be gripped by the mandrelgripper I2, it isthus far seen that the web is in condition to be fed forwardly throughthe open cutter I5 and the pull-along dog d. The lower knife I5a of thepair is vertically movable into cutting and open positions by a suitablemechanis'm for the actuation of the cutter in timed relation with thefeed such that the web is severed and the mandrel can complete itswind-up in the predetermined number of turns of body-forming. While theforward end of the paper is thus being held by being drawn forward bythe rotating mandrel in its wind-up the feed table F is thrown back toits rear position, the feed dog or dent d sliding back freely over thepaper. Then, after the knife I5 has severed the paper for the completionof the tube being wound, the

table F is in readiness to be advanced again to carry the projecting endof the web into the mandrel for a new cycle of wind-up. The movableknife I 5a may be operated within its guide I 5b for instance by a lever|50, Figs. 1 and 2f, actuated through a link I5d by a bell-crank typelever I5c having a follower in cam I5f.

In order to insure a smooth building of the body as wound on vthemandrel, the wound-up layers are advantageouslycompacted down by avroller 20, which is brought into operation by suitable means, as forinstance a cam 20a actuating a lever arm 20h which is in the form of abellcrank lever fulcrumed to the framing and whose other arm 20c isattached to the arm 20d carrying the roller 20. By means of suchconstruction, any slight adjustment -necessary may be provided, therebeing a slot take-up between the arms 20c instance a cam 26 operatingthe lever 21 whose upper end is pivoted to the framing, and a link 28and another lever 29 pivoted at its lower end connects .througha link 30to the slide 3| which carries the ejector whereby to reciprocate it intimed relation with the rotation of the mandrel. Where desired, theejector may thus discharge' the tubes from the mandrel. Or preferablythe arrangement may be such as to advance it to a next stage where thewound-up tube body receives its further surfacing. Particularly wherelower grade stock is used for the building of the body, it is desirableto have also means for supplying a cover which may be of suitable highgrade or special stock or it may be a label. For this, a'feed table 35,Fig. 3, is arranged to receive a stack of the cover sheets, and anadhesive roller is provided for coating at least the tail end of thesheet as it is advanced into winding position, to assure its smooth seamunion. 'I'he table 35 is arranged to carry a stack of the cut sheets ofsuch special stock as is to be applied for the finishing layer ofthecover, and the table is vertically movable so as to present thetopmost sheet in suitable posi-y tion for engagement by the mandrel. Aspring 36 for instance may be provided to pull the table into uppermostposition while its downward movement may be effected.. positively by acam 36g coacting with a cam roller 36h on the pull-arm 36a which ispivoted at one end to the frame, and at its other end engages by slot36h with a pin 36e on a lever arm 36d operating against a roller 36e atthe lower end of the table stem 362'. The height to which the tablerises at any given time when cam 36g is turned into its inactiveposition depends upon the height of the stack of sheets on the top ofthe table and the guard finger 50 which is carried by the table andcoordinates the feed such that the top sheet of the stack is properlypresented at each timed cycle. The guard finger 50 is so mounted in thetable as to have a ratchetwise descent. A smoothing roller 40 isarranged to coact for smoothing the applied cover sheet operated by anarm 4|, preferably including a take-up adjustment 42, pivoted to a lever43 which supports the roller 40 from a pivot point of mounting on theframe. The arm 4| may be reciprocated up and down in timed relation withthe rest of the machine by suitable means, as for instance a lever 44pivotally connected at one end 45 to the frame and having its free endarranged for operation through a cam-roller 44a by a cam 44h on shaft48, 'Ihe sheets from the table 35 are fed one'at a time by each raisebringin'g the topmost with its advance end in roll-up feed contact withthe table body on the mandrel, and guard finger 50 is arranged tonormally just contact the tube on the mandrel 2. As the sheets areremoved from the stack progressively, the table 35 is correspondinglyraised, and the guard finger 50 correspondingly retracts as needed, byits escapement ratchet, which may include a spring pawl 52, coactingwith the ratchet toothed stem 53 of the guard finger.

The operation of the machine will be clearly understood from theforegoing. The paper web w fed from its roll is coated with adhesive bythe roller 9 and is forwarded to the feed table F and into the gripperI2, the mandrel in its beginning cycle of rotation, turning, with promptclosure of the gripper, and thence winding the sheet stock into tubeform in whatever number of layers is desired. In its travel over thefeed table F, it will be understood that the paper web proceeds over theguide roller g past detent d to slitter r, the detent d serving tovwedge andhold the paper against back-slacking, and the forward end ofthe paper web comes between the lower feed iinger I0 and the upper feedfinger Illa, the finger Illa sliding over the paper web, butfrictionally gripping it on forward feeding movement to themandrel-gripper l2 which by the timing is open at that instant. Beinggripped then in the mandrel, the latter then rapidly rotating to two orfor instance four or more turns, builds up the desired body thickness,the cutter knife I5a having severed the paper. With further turning ofthe mandrel, the smoothing roller 20 being meantime in operation againstthe paper, the successive layers are laid down and are bonded by theadhesive, to the completed wind-up of the cut portion. Thereupon, theejector collar 25 is moved forwardly by its slide 3l and associatedmechanism and the mandrel gripper I2 is opened, and the mandrel iscleared for the reception of the on-coming end of the advancing paperweb as fed by the reciprocating fingers I0, Illa. The tube wound andpushed along by the ejector collar 25 is now in position opposite thetable 35, where for instance a stack of cover sheets is in place, and atthis juncture the table is raised to feed the topmost sheet to the tube,and since the outside of the wound-up paper constituting the tube is theadhesive-coated side the sheet as raised with its advance endthereagainst adheres and winds onto the rotating tube. The upperposition of the table 35 is gauged by guard linger 50 whose functioningprevents feed of more than one thickness of paper to the tube at a time,the guard finger being automatically compensated to the diminishingstack of sheets on the table, by being pushed down past the spring pawl52, as necessary, and intermediate compensation being given by thecompensating tip 5l which is spring urged by spring 5|a. The portion 5|is suitably supported along 5Ia in a bore. As the table 35 raises andthen lowers, its motion through slotted link 38 operates a ratchet pawl38a against ratchet wheel 38h and in lowering thereby turns the feedroller 39 suitably to apply adhesive to a sufficient sealing portion ofthe uppermost sheet which is started in contact against and is beingwound onto the tube on the mandrel 2. The return throw of the ratchetpawl 38a may be accomplished by a spring 38d whose tension may beadjusted by clamping its anchoring bolt at the point desired in the slotof the bracket 38C. The smoothing roller 4U, raised into position by thespring 44h holds an even pressure against the rapidly rotating tube, andthe cover is smoothly applied. The ejector collar 25 thereupon moves toslide the tubes ahead of it further along the mandrel, clearing thepositions for the further stage of operations.

Other modes of applying the principle of the invention may be employed,change being made as regards the details described, provided thefeatures stated in any of the following claims, or the equivalent ofsuch, be employed.

I therefore particularly point out and distinctly claim as my invention:

1. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed, means for rotating the mandrel, means forapplying adhesive to a web of cellulose, means for winding the latterconvolutely on the mandrel, means for severing the web in suicientlength for a tube, means for compacting the tube, means for surfacingthe tube including a feed table for a stack of cover sheets and meansfor applying adhesive to the topmost sheet thereof and means forstepwise raising the table to contact such topmost sheet with the tubebefore winding the sheet on the tube, and means for pushing the Woundtubes from the winder means to the surfacing means and to discharge bystages.

2. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of cellulose; a feed table passing thecellulose web to the mandrel; gripping means in said mandrel includingan oscillatable gripper member provided with gear teeth, pinion meansengaging therewith, a pinion shaft in a hollow bore of the mandrel shaftfor operating the pinion means, a pin carried by Said pinion shaft, atransverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, an angularlydirectedcamming slot in said sleeve, alever for reciprocating said sleeve, and acam for operating said lever; means for reciprocating said feed table toand from the mandrel; an anti-friction roller mounting for said feedtable in association with slot-means for limiting the motion range; a.web detent and slitter and resilient gripper linger on said table; a.pressure arm for said gripper finger and an operating arm andde-centering spring connected therefrom to the table for holding thepressure arm in on or off positions; cut-off means including avertically movable shear blade, and

mandrel; tube-finishing means including a vertically movable table forsupplying final cellulose layer material to the tube, a gluing rollercooperating with said table, means controlled by the movement of thetable for turning said roller, a guard finger on said table forrestricting the sheet feed, a resilient release pawl allowingprogressive descent of the guard finger, a spring-supported compensatingtip on saidguard finger; timing cam means for operating said table; anda smoothing rollerV movable to and away from the mandrel, spring meansfor urging the roller toward the mandrel, and cam means for withdrawingthe roller in timed relation to the sheet feed from said table.

3. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means for.applying adhesive to a web of cellulose; a feed table passingthe-cellulose web to the mandrel; gripper means in said mandrelincluding an oscillatable gripper member provided with gear teeth,pinion e means engaging therewith, a pinion shaft in a detent andslitter and resilient gripper nger on said table; a pressure arm forsaid gripper nger and an operating arm and de-centering spring connectedtherefrom to the table for holding the pressure arm in on or offpositions; cut-olf means including a vertically movable shear blade, anda timing cam and connections for operating said blade; a swingableroll-down roller for smoothing the tube as built, means for adjustingthe swing of said roller relative to the mandrel; timing cam means foroperating said roller to and from the mandrel; tube-finishing meansincluding a vertically movable table for supplying iinal cellulose layermaterial to the tube, a gluing roller cooperating with said table, meanscontrolled by the movement of the table for turning said roller, a guardiinger on said table for restricting the sheet feed, a resilient releasepawl allowing progressive descent of the guard nger, a springsupportedcompensating tip on said guard finger; timing cam means for operatingsaid table; and a smoothing roller movable to and away from the mandrel,and cam means for withdrawing the roller in timed relation to the sheetfeed from said table.

4. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of cellulose; a feed table passing thecellulose web to the mandrel; gripper means in said mandrel including anoscillatable gripper member provided with gear teeth, pinion meansengaging therewith,a pinion shaft in a hollow bore of the mandrel shaftfor operating the pinion means, a pin carried by said pinion shaft, atransverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, an angularly-directedcamming slot in said sleeve, a lever for reciprocating said sleeve, anda cam for operating said lever; means for reciprocating said feed tableto and from the mandrel; an anti-friction roller mounting for said feedtable in association with slot-means 'for limiting the motion range; aweb detent and slitter and resilient gripper finger on said table; apressure arm for said gripper finger and an operating arm andde-centering spring connected therefrom to the table for holding thepressure arm in on or 01T positions; cut-olf means including avertically movable shear blade, and a timing cam and connections foroperating said blade; a swingable roll-down roller for smoothing thetube as built, means for adjusting the swing of said roller relative tothe mandrel; timing cam means for operating said roller to and from themandrel; tube-finishing means including a vertically movable table forsupplying nal cellulose layer material to the tube, a gluing rollercooperating with said table, a guard finger on said table forrestricting the sheet feed, a resilient release pawl allowingprogressive descent of the guard finger, a spring-supported compensatingtip on said guard finger; timing cam means for operating said table; anda smoothing roller movable to and away from the mandrel, and cam meansfor withdrawing the roller in timed relation to the sheet feed from saidtable.

5. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of cellulose; a feed table passing thecellulose web to the mandrel; gripper means in said mandrel including anoscillatable gripper member provided with'gear teeth, pinion meansengaging therewith, a pinion shaft in a hollow bore of the mandrel shaftfor operating the pinion means, a pin carried by said pinion shaft, Aatransverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, an angularly-directedcamming slot in said sleeve, a lever for reciprocating said sleeve, anda. cam for operating said lever; means for reciprocating said feed tableto and from the mandrel; an anti-friction roller mounting for said feedtable in association with slot-means for limiting the motion range; aweb detent and slitter and resilient gripper linger .on said table; apressure arm for said gripper finger and an operating arm andde-centering spring connected therefrom to the table for holding thepressure arm in on or olf positions; cutoff means including a verticallymovable shear blade, and a timing cam and connections for operating saidblade; a swingable roll-down roller for smoothing the tube as built,means for adjusting the swing of said roller relative to the mandrel;timing cam means for operating said roller to and from the mandrel;tube-finishing means including a vertically movable table for supplyingfinal cellulose layer material to the tube, a gluing roller cooperatingwith said table, a guard iinger on said table for restricting the sheetfeed, a resilient release pawl allowing progressive descent of the guardfinger; timing cam means for operating said table; and a. smoothingroller movable to and away from the mandrel, and cam means forwithdrawing the roller in timed relation to the sheet feed from saidtable.

6. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes. formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of cellulose; a feed table passing thecellulose web to the mandrel; gripper means in said mandrel including anoscillatable gripper member provided with gear teeth, pinion meansengaging therewith, a pinion shaft in a hollow boreof the mandrel shaftfor operating the pinion means, a pin carried by said pinion shaft, atransverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, ansingularly-'directed camming slot in said sleeve, a lever forreciprocating said sleeve, and a cam for operating said lever; means forreciprocating said feed table to and from the mandrel; an anti-frictionroller mounting for said feed table in association with slot-means forlimiting themotion range; a web detent and slitter and resilient grippernger on said table; a pressure arm for said gripper finger and anoperating arm and de-centering spring connected therefrom to the tablefor holding the pressure arm in on or olf positions; cut-01T meansincluding a 'vertically movable shear blade, and a timing cam andconnections for operating 'said blade; aswingable roll-down roller forsmoothing the tube as built; timing cam means for operating said rollerto and from the mandrel; tubefinishing means including a verticallymovable table forsupplying nal cellulose layer material to the tube, agluing roller cooperating with said table, a guard nger on said tablefor restricting the sheet feed, a resilient release pawl allowingprogressive descent of the guard linger; timing cam means for operatingsaid table; and a smoothing roller movable to and away from the 7. Intube making apparatus, a mandrel having a free end permitting dischargeof tubes formed; a shaft for rotating the mandrel; means for applyingadhesive to a web of cellulose; a feed table passing the cellulose webto the mandrel; gripper means in said mandrel including an oscillatablegripper member provided with gear teeth, pinion means engagingtherewith, a pinion shaft in a hollow bore of the mandrel shaft foroperating the pinion means, a pin carried by said pinion shaft, a.transverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, an angularlydirectedcamming slot in said sleeve, a lever for reciprocating said sleeve, anda cam for operating said lever; means for reciprocating said feed tableto and from the mandrel; an anti-friction roller mounting for said feedtable in association with slot-means for limiting the motion range; aweb detent and slitter and resilient gripper finger on said table; apressure arm for said gripper finger and an operating arm andde-centering spring connected therefrom to the table for holding thepressure arm in on or off positions; cut-off means including avertically movable shear blade, and a timing cam and connections foroperating said blade; a swingable roll-down roller for smoothing thetube as built; timing cam means for operating said roller to and fromthe mandrel; tube-finishing means including a vertically movable tablefor supplying nal cellulose layer material to the tube, a gluing rollercooperating with said table, a guard nger on said table for restrictingthe sheet feed, a resilient release pawl allowing progressive descent ofthe guard nger; and timing cam means for operating said table.

8. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of cellulose; a feed table passing thecellulose web to the mandrel; gripper means in said mandrel including anoscillatable gripper member provided with gear teeth, pinion meansengaging therewith, a pinion shaft in a hollow bore of the mandrel shaftfor operating the pinion means, a pin carried by said pinion shaft, atransverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, an angularlydirectedcamming slot in said sleeve, a lever for reciprocating said sleeve, anda cam for operating sadi lever; means for reciprocating said feed tableto and from the mandrel; an anti-friction roller mounting for said feedtable in association with slot-means for limiting the motion range; aweb detent and slitter and resilient gripper nger on said table; apressure arm for said gripper finger and an operating arm anddecentering spring connected therefrom to the table for holding thepressure arm in on or off positions; eut-off means including avertically movable shear blade, and a timing cam and connections foroperating said blade; a swingable rolldown roller for smoothing the tubeas' built;

timing cam means for operating said roller to and from the mandrel;tube-finishing means including a vertically movable table for supplyingnal cellulose layer material to the tube; a gluing roller cooperatingwith said table, a guard finger on said table for restricting the sheetfeed; and timingcam means for operating said table.`

9. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of cellulose; a

feed table passing the cellulose web to the mandrel; gripper means insaid mandrel including an oscillatable gripper member provided with gearteeth, pinion means engaging therewith, a pinion shaft in a hollow boreof the mandrel shaft for operating the pinion means, a pin carried bysaid pinion shaft, a. transverse camming slot in the mandrel shaftreceiving said pin, `a sleeve axially reciprocable on the mandrel shaft,an angularly-directed camming slot in said sleeve, a lever forreciprocating said sleeve, and a cam for operating said lever; means forreciprocating said feed table to and from the mandrel; an antifrictionroller mounting for said feed table in association with slot-means forhunting the motion range; a web detent and slitter and resilient gripperfinger on said table; a pressure arm for said gripper finger and anoperating arm and de-centering spring connected therefrom to the tablefor holding the pressure arm in on or olf positions; cut-off meansincluding a vertically movable shear blade, and a timing cam andconnections for operating said blade; a swingable roll-downroller forsmoothing the tube as built; timing cam means for operating said rollerto and from the mandrel; tubefinishing means including a verticallymovable table for supplying final cellulose layer material to the tube;a gluing roller cooperating with said table; and timing cam means foroperating said table. Y

10. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of cellulose; a feed table passing thecellulose web to the mandrel; gripper means in said mandrel including anoscillatable gripper member provided with gear teeth, pinion meansengaging therewith, a pinion shaft in a hollow bore of the mandrel shaftfor operating the pinion means, a pin carried by said pinion shaft, atransverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, an angularlydirectedcamming slot in said sleeve, a. lever for reciprocating said sleeve, anda cam for operating said lever; means for reciprocating said feed tableto and from the mandrel; an anti-friction roller mounting for said feedtable in association with slot-means for limiting the motion range; aweb detent and slitter and resilient gripper finger on said table; apressurearm for said gripper nger and an operating arm and de-centeringspring connected therefrom to the table for holding the pressure arm inon or off positions; cut-off means including a vertically movable shearblade, and a timing cam and connections for operating said blade; aswingable rolldown roller for smoothing the tube as built; and means foroperating said roller to and from the mandrel.

.11. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of cellulose; a feed table passing thecellulose web to the mandrel; gripper means in said mandrel including anoscillatable gripper member provided with gear teeth, pinion meansengaging therewith, a pinion shaft in a hollow bore of the mandrel shaftfor operating the pinion means, a pin carried by said pinion shaft, atransverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, an angularlydirectedcamming slot in said sleeve, a lever for f fil reciprocating saidsleeve, and a cam for operating said lever; means for reciprocating saidfeed table to and from the mandrel; an anti-friction roller mounting forsaid feed table in association with slot-means for limiting the motionrange; a web detent and slitter and resilient gripper finger on saidtable; a pressure arm for said gripper nger and an operating arm andde-centering spring connected therefrom to the table for holding thepressure arm in on or 01T positions; and cut-oli means including avertically movable shear blade, and a timing cam and connections foroperating said blade.

12. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; a shaft for rotating the mandrel; means forapplying adhesive to a web of' cellulose; a feed table passing thecellulose web to the mandrel; gripper means in said mandrel including anoscillatable gripper member provided with gear teeth, pinion meansengaging therewith, a pinion shaft in a hollow bore of the mandrel shaftfor operating the pinion means, a pin carried by said pinion shaft, atransverse camming slot in the mandrel shaft receiving said pin, asleeve axially reciprocable on the mandrel shaft, an angularly-directedcamming slot in said sleeve, a lever for reciprocating said sleeve, anda cam for operating said lever; means for reciprocating said feed tableto and from the mandrel; an antifriction roller mounting for said feedtable in association with slot-means for limiting the motion range; aweb detent and slitter and resilient gripper nger on said table; apressure arm for said gripper finger and an operating arm andde-centering spring connected therefrom to the table for holding thepressure arm in on or olf positions; and means for cuttingthe Web.

13. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; means for rotating the mandrel; means forsupplying cellulose sheet material to the mandrel, including avertically movable table, a guard finger on said table for restrictingthe sheet feed, a resilient release pawl allowing progressive descent ofthe guard finger; and means for operating said table.

14. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes i, formed; a shaft for rotating the mandrel; meansfor feeding a web of cellulose to the mandrel; tube-finishing meansincluding a vertically movable table for supplying nal cellulose layermaterial to the tube, a gluing roller cooperating with said table, aguard finger on said table for restricting the sheet feed; and timingcam means for operating said table.

15. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; means for rotating the mandrel; means forsupplying cellulose sheet material to Athe mandrel, including avertically movable table, a guard` finger on said table for restrictingthe sheet feed, a spring-urged compensating tip in said guard finger, aresilient release pawl allowing progressive descent of the guard nger;and means for operating said table.

16. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; means for rotating the mandrel; means forsupplying cellulose sheet material to the mandrel, including anintermittently vertically movable table, a guard finger on said tablefor restricting the sheet feed, a resilient release pawl allowingprogressive descent of the guard finger; spring means for operating saidtable; an adhesive-applying roller above said table to be engaged by thetopmost sheet of the stack thereon; a ratchet-drive for said roller,including a lostmotion link actuated by said table for operating saidratchet drive; and a smoothing roller engageable against the sheetsupplied to the mandrel.

17. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; means for rotating the mandrel; means forsupplying cellulose sheet material to the mandrel, including anintermittently vertically movable table, a guard finger on said tablefor restricting the sheet feed, a resilient release pawl allowingprogressive descent of the guard nger; spring means for operating saidtable; an adhesive-applying roller above said table to be engaged by thetopmost sheet of the stack thereon; a ratchet-drive for said roller,including a lostmotion link actuated by said table for operating saidratchet drive; a smoothing roller engageable against the sheet suppliedto the mandrel; and cam means for intermittently controlling saidsmoothing roller.

18. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; means for rotating the mandrel; means forsupplying cellulose sheet material to the mandrel, including anintermittently vertically movable table, a guard finger on said tablefor restricting the sheet feed, said guard finger being mounted forprogressive descent in accordance with the height of the stack ofsheets; an adhesive-applying roller above said table to be engaged bythe topmost sheet of the stack thereon; means for driving saidadhesive-applying roller in timed relation ywith the movement of thetable; a smoothing roller engaged to the sheet supplying the roller; andmeans for intermittently applying said last-named roller.

19. In tube making apparatus, a mandrel having a free end permittingdischarge of tubes formed; means for rotating the mandrel; means forsupplying cellulose sheet material to the mandrel, including avertically movable table, a guard ngeron said table for restricting thesheet feed, a spring-urged compensating tip on said guard finger; anadhesive-applying roller above said table to be engaged by the topmostsheet of the stack thereon; a ratchet drive for said roller; alost-motion link for operating said ratchet-drive; a smoothing rollerengageable against the sheet supplied to the mandrel; and means forintermittently controlling said last-named roller.

20. In tube making apparatus, a hollow mandrel having a free endpermitting discharge of tubes formed; means for rotating the mandrel,including a hollow driving shaft; means for supplying cellulosetube-forming material to the mandrel; gripper means in said mandrelincluding an oscillatable gripper member provided with gear teeth,pinion means engaging said gear teeth,

a pinion shaft extending axially in said hollow K

